Well, If you're coming from Ink'd, either one is going to make you very, very happy. I haven't heard the TTPOD, so I can only give you an opinion on the VSD3S. The VSD3S doesn't have bass that will slam or boom, but the bass is very deep and you feel it more so than you hear it. It's definitely there, it's just not overpowering. The highs can get a little harsh, but it's not a big deal unless you're listening to them too loud. You can also use different tips to make them less harsh in the treble. The VSD3S also has a great image and soundstage. That is, you can tell where every instrument is, and they're all very clear and separate from on another. You can close your eyes and hear the sound all around you instead of just in your left and right ear. FWIW, I listen to everything from Metal, to Alt rock, to Folk, to EDM, to Asian Pop, to Jazz, to Classical, and there's nothing they don't do well. Vocals and guitars sound particularly nice and drums are softer but tight and controlled. They're a very musical and easy to listen to IEM that make a great all arounder.
My original thoughts on them are here:
http://www.head-fi.org/t/669510/the-new-iem-of-vsonic-vsd-3s-impression-updated-by-smailbz/1695#post_10687161
There's a lot of other good info on them around those pages from others.